CVE-2026-80826
Description
In the Linux kernel, the following vulnerability has been resolved: USB: c67x00: fix use-after-free in c67x00_add_iso_urb() When TD creation fails for the last packet of an isochronous URB, c67x00_add_iso_urb() gives the URB back before updating the endpoint scheduling state. c67x00_giveback_urb() frees the URB private data, and the completion callback may release the final URB reference. The following accesses to urbp->ep_data, urb->interval, and urbp->cnt can therefore use freed memory. Update next_frame and cnt before giving back the failed final packet, making the giveback the last operation that uses the URB and its private data.
How to fix
- Linux Linuxe4039e9bebb528dd9cd7ac72aeaec529c26c355a, ade18b4ce78a16558f4f435aece80082f6f7b64c, bb572801290e25ec1c4753d14af35777303f5d6b, 62cd519ab74cac499036cd88c11692f8f0d53e14, ff172092cba7ec990ecc7b610ce703e19570b8f0, b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421, 7983daa159981fac125db2457437723f38ea1472, f24dcc61bd0ecf7639fac5bf700450b398d793a7, b1e24de475bf2d66fffc9103f3444b783527d55a or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d ≤ v < e4039e9bebb528dd9cd7ac72aeaec529c26c355a, e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d ≤ v < ade18b4ce78a16558f4f435aece80082f6f7b64c, e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d ≤ v < bb572801290e25ec1c4753d14af35777303f5d6b, e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d ≤ v < 62cd519ab74cac499036cd88c11692f8f0d53e14, e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d ≤ v < ff172092cba7ec990ecc7b610ce703e19570b8f0, e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d ≤ v < b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421, e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d ≤ v < 7983daa159981fac125db2457437723f38ea1472, e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d ≤ v < f24dcc61bd0ecf7639fac5bf700450b398d793a7, e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d ≤ v < b1e24de475bf2d66fffc9103f3444b783527d55a, 2.6.26 | e4039e9bebb528dd9cd7ac72aeaec529c26c355a, ade18b4ce78a16558f4f435aece80082f6f7b64c, bb572801290e25ec1c4753d14af35777303f5d6b, 62cd519ab74cac499036cd88c11692f8f0d53e14, ff172092cba7ec990ecc7b610ce703e19570b8f0, b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421, 7983daa159981fac125db2457437723f38ea1472, f24dcc61bd0ecf7639fac5bf700450b398d793a7, b1e24de475bf2d66fffc9103f3444b783527d55a |
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